// 数值分隔符
let budget = 1_000_000_000_000;
console.log(budget === 10 ** 12) // true
console.log(123_00 === 12_300) // true
console.log(12345_00 === 123_4500) // true
console.log(12345_00 === 1_234_500) // true
//console.log(0_b111111000)
//console.log(0b_111111000)
let num = 12_345;
console.log(num) // 12345
console.log(num.toString()) // 12345